| //@ run-pass |
| // Tests that two closures can simultaneously have immutable |
| // access to the variable, whether that immutable access be used |
| // for direct reads or for taking immutable ref. Also check |
| // that the main function can read the variable too while |
| // the closures are in scope. Issue #6801. |
| |
| |
| fn a() -> i32 { |
| let mut x = 3; |
| x += 1; |
| let c1 = || x * 4; |
| let c2 = || x * 5; |
| c1() * c2() * x |
| } |
| |
| fn get(x: &i32) -> i32 { |
| *x * 4 |
| } |
| |
| fn b() -> i32 { |
| let mut x = 3; |
| x += 1; |
| let c1 = || get(&x); |
| let c2 = || get(&x); |
| c1() * c2() * x |
| } |
| |
| fn c() -> i32 { |
| let mut x = 3; |
| x += 1; |
| let c1 = || x * 5; |
| let c2 = || get(&x); |
| c1() * c2() * x |
| } |
| |
| pub fn main() { |
| assert_eq!(a(), 1280); |
| assert_eq!(b(), 1024); |
| assert_eq!(c(), 1280); |
| } |